Company lists · Data refreshed September 2026

Top 25 Big agencies based in the United States

RevenueBase identified 5,861 company matches for big agencies associated with the United States as of September 2026 and tracks 129,224 professional contacts across them, including 36,691 with verified work emails. New York is the largest hub.

This list covers company matches for big agencies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
5,861Companies
129,224Contacts tracked
36,691Verified emails
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The 25 largest big agencies based in the United States

Ranked by team size
Top 25 of 5,861 company matches for big agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202610001+12,165 contacts →

Exact match

“Ogilvy has been creating impact for brands through iconic, culture-changing, value-driving ideas since the company was founded by David Ogilvy 75 years ago.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202610001+4,963 contacts →

Exact match

“IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20261,001-5,0004,191 contacts →

Exact match

“Weber Shandwick is the earned-first global communications agency.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202610001+3,874 contacts →

Exact match

“McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20265,001-10,0003,574 contacts →

Exact match

“J.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20265,001-10,0002,648 contacts →

Exact match

“Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20261,001-5,0002,368 contacts →

Exact match

“Horizon Media is a leader in driving business-based outcomes for marketers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202610001+1,727 contacts →

Exact match

“Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202610001+1,602 contacts →

Exact match

“Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20265,001-10,0001,501 contacts →

Exact match

“Do Big Things”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchBaltimore, MD, United StatesHQ recorded Sep 21, 2026n/a1,255 contacts →

Exact match

“TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20261,001-5,000903 contacts →

Exact match

“1300+ People.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026501-1,000887 contacts →

Exact match

“Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Sep 21, 20261,001-5,000815 contacts →

Exact match

“Ruder Finn is one of the world’s largest global independent integrated marketing and communications agencies, leading at the intersection of technology, human creativity, and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchLos Angeles, CA, United StatesHQ recorded Sep 21, 2026201-500750 contacts →

Exact match

“In business for over 30 years, Allied has built upon its roots in film advertising and publicity to become a global leader in entertainment, culture, and lifestyle marketing.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026501-1,000744 contacts →

Exact match

“Founded in 2004, Anomaly is a difficult to define, but exciting to work at 'new model' agency.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchSouthfield, MI, United StatesHQ recorded Sep 21, 2026501-1,000708 contacts →

Exact match

“Doner unlocks all the tools of Modern marketing to build lasting connections with every day, Main Street consumers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchMiami, FL, United StatesHQ recorded Sep 21, 2026501-1,000696 contacts →

Exact match

“SCI was merged and sold to WPP in 2010.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchMalvern, PA, United StatesHQ recorded Sep 21, 2026501-1,000572 contacts →

Exact match

“Stream Companies is a full service advertising agency that specializes in launching, positioning, and long term management of brands on full service contracts and a…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchMadison, NC, United StatesHQ recorded Sep 21, 2026n/a567 contacts →

Exact match

“About Face Models, is a nationwide model, talent, and staffing agency.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026201-500543 contacts →

Exact match

“Prosek Partners builds – and protects – the top brands in business.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchAtlanta, GA, United StatesHQ recorded Sep 21, 2026n/a527 contacts →

Exact match

“Everywhere Agency is now a part of MWWPR.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchKansas City, MO, United StatesHQ recorded Sep 21, 2026501-1,000518 contacts →

Exact match

“BarkleyOKRP is one of the largest independent ad agencies in the U.S, matching scale with soul to help build brands like Burger King, Corona Premier, Metro by T-Mobile, Planet…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026501-1,000505 contacts →

Exact match

“Droga5, part of Accenture Song, is a creative agency with offices in New York, London, Dublin, Tokyo and São Paulo.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchChicago, IL, United StatesHQ recorded Sep 21, 2026n/a504 contacts →

Exact match

“Stewart Talent is a leading, national talent agency with offices in Atlanta, Chicago, Los Angeles and New York.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 5,861 big agencies based in the United States

See the full list, filter by size, metro and specialty, and access 36,691 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Big agencies based in the United States at a glance

As of Sep 21, 2026
28.4%Verified-email coverage
22.0Average contacts per company
1-10Median size (employees)
8.1%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
3,600
11-50
1,811
51-200
337
201-500
56
501-1,000
24
1,001-5,000
14
5,001-10,000
7
10001+
10

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,861 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “big agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 36,691 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “big agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many big agencies are there based in the United States?

RevenueBase identified 5,861 company matches for big agencies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ogilvy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most big agencies?

New York leads with 474 company records, followed by Los Angeles (231) and Chicago (136).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 36,691 professional contacts with verified work emails tracked across these 5,861 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.